I now have a 2009 335 with a sport package. Even with stock shocks and RFTs, the ride isn't as loud as my 2006 was. It's nowhere near as quiet as my RS4, but it's passable. And I know I can likely improve it with Koni FSDs and regular tires.

I'm not sure why the ride on my 2006 was so bad. Yes, you can improve it further with FSDs (especially at higher speeds), but don't expect a miracle. Good luck!

BMW's good about refinement; wheels grind slowly in Munich.

But good things happen at Ground Control - combined w/delrin surfaced M arms, their yellows/matched linear springs combo has eliminated pothole explosions for this li'l boy.